diff --git a/BizHawk.Emulation/Consoles/Atari/2600/Atari2600.Core.cs b/BizHawk.Emulation/Consoles/Atari/2600/Atari2600.Core.cs
index ee0b4567e7..9efe7fe4d9 100644
--- a/BizHawk.Emulation/Consoles/Atari/2600/Atari2600.Core.cs
+++ b/BizHawk.Emulation/Consoles/Atari/2600/Atari2600.Core.cs
@@ -13,6 +13,7 @@ namespace BizHawk
 		public MOS6502X cpu;
 		public M6532 m6532;
 		public TIA tia;
+		public Emulation.Sound.Utilities.DCFilter dcfilter;
 		public byte[] ram = new byte[128];
 		public MapperBase mapper;
 
@@ -142,6 +143,8 @@ namespace BizHawk
 			// Setup TIA
 			//tia = new TIA(this, frameBuffer);
 			tia = new TIA(this);
+			// dcfilter coefficent is from real observed hardware behavior: a latched "1" will fully decay by ~170 or so tia sound cycles
+			dcfilter = new Emulation.Sound.Utilities.DCFilter(tia, 256);
 			// Setup 6532
 			m6532 = new M6532(this);
 
diff --git a/BizHawk.Emulation/Consoles/Atari/2600/Atari2600.cs b/BizHawk.Emulation/Consoles/Atari/2600/Atari2600.cs
index 55dace3c72..83596930e9 100644
--- a/BizHawk.Emulation/Consoles/Atari/2600/Atari2600.cs
+++ b/BizHawk.Emulation/Consoles/Atari/2600/Atari2600.cs
@@ -12,7 +12,7 @@ namespace BizHawk
 		public CoreInputComm CoreInputComm { get; set; }
 		public CoreOutputComm CoreOutputComm { get; private set; }
 		public IVideoProvider VideoProvider { get { return tia; } }
-		public ISoundProvider SoundProvider { get { return tia; } }
+		public ISoundProvider SoundProvider { get { return dcfilter; } }
 
 		public Atari2600(GameInfo game, byte[] rom)
 		{
diff --git a/BizHawk.Emulation/Sound/Utilities/DCFilter.cs b/BizHawk.Emulation/Sound/Utilities/DCFilter.cs
index b910e1c1ec..079bfe96e6 100644
--- a/BizHawk.Emulation/Sound/Utilities/DCFilter.cs
+++ b/BizHawk.Emulation/Sound/Utilities/DCFilter.cs
@@ -24,15 +24,16 @@ namespace BizHawk.Emulation.Sound.Utilities
 
 		Queue<short> buffer;
 
-		const int depth = 65536;
+		int depth;
 		
 		/// <summary>
 		/// if input == null, run in detatched push mode
 		/// </summary>
 		/// <param name="input"></param>
-		public DCFilter(ISoundProvider input = null)
+		public DCFilter(ISoundProvider input = null, int filterwidth = 65536)
 		{
 			this.input = input;
+			this.depth = filterwidth;
 			this.buffer = new Queue<short>(depth * 2);
 			for (int i = 0; i < depth * 2; i++)
 				buffer.Enqueue(0);
@@ -65,8 +66,8 @@ namespace BizHawk.Emulation.Sound.Utilities
 				sumR += R;
 				buffer.Enqueue(L);
 				buffer.Enqueue(R);
-				int bigL = L - (sumL >> 16); // / depth;
-				int bigR = R - (sumR >> 16); // / depth;
+				int bigL = L - sumL / depth;
+				int bigR = R - sumR / depth;
 				// check for clipping
 				if (bigL > 32767)
 					samples[i] = 32767;